| 摘要 |
PURPOSE:To enhance electric chargeability of the electrophotograph toner by selecting a charge controller and a colorant same as each other in chargeable polarity and opposite in that to a binder resin. CONSTITUTION:The phenomenon that the colorant covers the charge controller is caused by the fact that the colorant is liable to attach to the charge controller. Accordingly, when the colorant and the charge controller are selected so as to have the same chargeable polarity against the binder resin, e.g., a positive chargeable polarity, the binder resin becomes chargeable relatively to the negative polarity, and the liability of the colorant to attach to the charge controller can be restrained, thus permitting the obtained electrophotographic toner to be improved in chargeability. |
